But she writes that Google needs to move beyond engineers and beef up its direct sales force. She quotes David Ambrose, co-founder of Scoop St, a Groupon clone, that Google might pay more than $2.5 billion because "Google has never really been able to do direct sales well at all."

I don't believe that Google can buy a direct sales force capability. If it does, that effort will fail. Google's culture is engineering based and the sales force will never have the clout of engineering.

Just because it makes sense to have a strong direct sales force doesn't mean that it makes sense for a company to acquire one. Company culture always trumps logic and reason. And company culture is the least agile part of any organization.

And Google's engineering culture is deeply wired. For example, Google has been encouraged by vocal observers to buy a newspaper, such as the New York Times. But again, something like that would never happen because Google doesn't want to manage editors, journalists, foreign news bureaus, etc. It knows how to manage servers and software.

At the bottom of every Google news page you see the following:

"The selection and placement of stories on this page were determined automatically by a computer program."

Placement was not determined by a person but by an algorithm.

Algorithms and machines are a far more scalable and profitable business than a people based business such as a newspaper, or Groupon.

In addition, the higher costs of doing business with a large sales force will lower Google's profitability and that will affect its stock price. In mid-morning trading Tuesday Google [GOOG] was down 4% or $23.45 to $558.66 in reaction to the news.